Hemilamprops, Sars, 1883

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 64

Key to the species of Hemilamprops

1. Telson with more than 5 terminal setae.....................................................................2 - Telson with 3 or 5 terminal setae..........................................................................3 2. Eyelobe with lenses. Telson with 2 or more pairs lateral setae............................................ H. roseus - Eyelobe without lenses. Telson with 1 pair lateral setae............................................... H. assimilis 3. Telson with 5 terminal setae............................................................................. 4 - Telson with 3 terminal setae............................................................................ 10 4. Dorsal crest serrated........................................................................... H. normani - Dorsal crest entire..................................................................................... 5 5. Carapace with lateral ridges.............................................................................6 - Carapace without lateral ridges...........................................................................9 6. Carapace with 1 lateral ridge............................................................................. 6 - Carapace with 2 lateral ridges................................................................... H. japonicas 7. Telson shorter than uropod peduncles.............................................................. H. glabrus - Telson equal to or longer than uropod peduncles............................................................. 8 8. Uropod exopod article 1 subequal to article 2..................................................... H. californicus - Uropod exopod article 1 much shorter than article 2................................................. H. pacificus 9. Telson with equal length terminal setae............................................................. H. merlini - Telson with unequal length terminal setae.......................................................... H. diversus 10. Dorsal crest serrated or toothed.......................................................................... 11 - Dorsal crest entire.................................................................................... 16 11. Carapace with 2 lateral ridges.................................................................... H. miyakei - Carapace without lateral ridges.......................................................................... 12 12. Telson terminal setae at least twice as long as lateral setae.................................................... 13 - Telson terminal setae less than twice as long as lateral setae................................................... 14 13. Telson with 5 or more lateral setae...................................................................... 15 - Telson with 4 or fewer lateral setae................................................................ H. cristatus 14. Telson terminal setae subequal in length; telson distinctly shorter than uropod peduncles................... H. pellucidus - Telson terminal setae unequal in length, central seta long; telson length subequal to uropod peduncles....... H. impellucidus 15. Carapace with setae......................................................................... H. tanseinanus - Carapace without setae....................................................................... H. serrulatus 16. Carapace without lateral ridges.......................................................................... 17 - Carapace with lateral ridges............................................................................ 19 17. Telson subequal to uropod peduncles.............................................................. H. izuanus - Telson shorter than uropod peduncles..................................................................... 18 18. Telson terminal setae at least twice as long as lateral setae........................................... H. ultimaspei - Telson terminal setae less than twice long as lateral setae.............................................. H. emiensis 19. Carapace with 2 or more lateral ridges.................................................................... 20 - Carapace with 1 lateral ridge............................................................................ 23 20. Telson with 3 or fewer lateral setae............................................................... H. bacescui - Telson with more than 5 lateral setae..................................................................... 21 21. Carapace with 2 lateral ridges................................................................. H. bicarinatus - Carapace with more than 2 lateral lateral ridges............................................................. 22 22. Uropod exopod article 1 longer than article 2...................................................... H. pectinatus - Uropod exopod article 1 subequal or shorter than article 1............................................. H. bigibbus 23. Telson as long or longer than uropod peduncles.................................................... H. uniplicatus - Telson shorter than uropod peduncles..................................................................... 24 24. Telson with more than 3 lateral setae.............................................................. H. gracilis - Telson with 3 or fewer lateral setae....................................................................... 25 25. Carapace ventral lateral ridge incomplete, short..................................................... H. chilensis - Carapace lateral ridge sweeping from pseudorostrum dorsally to mid-dorsal expansion........................ H. pterini